Re: Caching JSON in Django

On 08/25/2010 02:23 PM, Jirka Vejrazka wrote:
>> I think that might be the case... I do extract parameters from GET.
>>
>> Am I out of luck?
>
> Well, nothing can stop your from doing the caching manually so you can
> tune it exactlly to your needs. It's actually not that difficult:
>
> from django.core.cache import cache
>
> def my_view(request):
> # some way to determine exact instaned of JSON data needed
> cache_key = 'some_way_to_uniquely_identify_json_data'
> json_data = cache.get(cache_key)
> if not json_data:
> # get the response data the hard way
> json_data = get_json_data()
> cache.set(cache_key, json_data)
> return HttpResponse(json_data)

Good example.

Small addition:

If you replace "if not json_data:" with "if json_data is not None", you
can also cache empty values. Otherwise you might do an expensive
calculation for [] over and over again without caching it :-)

Reinout

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